用于精密驱动的双足压电执行器设计OA

Piezoelectric actuators have received widespread attention due to their unique working principle and superior performance,and have been widely applied in many fields such as aerospace,microelectron-ics,and medical devices.It is difficult to accurately and quantitatively model and analyze the contact char-acteristics of the piezoelectric actuator,which affects the further improvement of system performance such as speed and load capacity.This article focuses on the research of a bipedal linear piezoelectric actuator and proposes and validates a structural optimization scheme that combines bending vibration equations with finite element numerical analysis.Based on the inverse piezoelectric effect and the equation of free bending vibration of equal section beams,the stator vibration modes and driving mechanisms are analyzed.Solid-Works software is used for 3D modeling,and ANSYS Workbench analysis tool is utilized for numerical simulation analysis of the contact performance of the stator,including the normal amplitude and output characteristics of the driving foot,further optimizing the system structure based on simulation data,and finally verifying the load-bearing capacity.The simulation results show that when the driving voltage is 100 V,the maximum normal displacement amplitudes of the left and right driving feet of the designed piezoelectric actuator are 14 μm and 7.5 μm,respectively.The no-load output speed of the rotor is 156 mm/s,and the maximum load capacity is 10 N.